TCCS 500 hz AFM & fuel cut

Crazy_Tycoon

New Member
Jan 29, 2009
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Abbotsford BC
As far as I understand :icon_bigg in normal operating conditions fuel cut is determined by the AFM signal plus some other variables.

So when I am experiencing fuel cut at 500 hz consistently is it a sign I have a bad ECU ? or is it missing a signal and dropping fuel cut down to 500 HZ beucase of some other reason.

Car history on 1st page.

http://www.supramania.com/forums/showthread.php?t=91909

I don't think its a throttle position becuase I can hit full throttle on a hill and I don't get fuel cut until I hit the 500 hz mark. When I ease the engine up to boost, if I'm really really nice on the throttle up I can feel boost kicking in just under the 500 525 hz mark but then its cutting fuel.